| Note 29 | Trade and other payables |
| Amounts in US$ '000 | | 2017 | | 2016 | | ||
| V.A.T | | | 1,118 | | | 1,102 | |
| Trade payables | | | 52,557 | | | 23,650 | |
| Payables to related parties (a) (Note 33) | | | 31,184 | | | 27,801 | |
| Customer advance payments (Note 3) | | | 10,000 | | | 20,000 | |
| Staff costs to be paid | | | 9,143 | | | 7,749 | |
| Royalties to be paid | | | 4,110 | | | 1,503 | |
| Taxes and other debts to be paid | | | 4,191 | | | 3,355 | |
| To be paid to co-venturers (Note 33) | | | 10,015 | | | 1,614 | |
| | | | 122,318 | | | 86,774 | |
| Classified as follows: | | | | | | | |
| Current | | | 96,397 | | | 52,008 | |
| Non current | | | 25,921 | | | 34,766 | |